From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from vps0.lunn.ch (vps0.lunn.ch [156.67.10.101]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D715F1366; Tue, 7 May 2024 01:39:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=156.67.10.101 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715045984; cv=none; b=ZE41oG8ejF+cRjhGplEq5CNgxfcWvu8CcW3bLOGELVVQpQ3Bt9197CCdSjGKiDTxKKlFGKnBBjgFBSWFDjW2yKAUP52BrgxmOWn8ohQ/+Ai0QLAvFsqct11ilr9fmWOOpiGMb0KUbAxvv0DxQob9ss7ONaKgKDYVHO5L2F5ENOc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715045984; c=relaxed/simple; bh=E7ARgkhEsohvSTW2NzXTQRNpgaQd8EYbT7I4/e0wuUM=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=k2cvFpUEtkmgD+lFf1+3mUflam6OZI44Gc6TjQkncSUsye6menj3nOxCHw2mkthvlUm7V8/0ntVMViptjAWwPwK7Q57kePMLy8/0rQr4KBez7xaO+2ikcKyL83WB+1Jy59A+qVHgWU91m6mrMosqg/0h6Iak2qQH4/rzNiQ44IQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=lunn.ch; spf=pass smtp.mailfrom=lunn.ch; dkim=pass (1024-bit key) header.d=lunn.ch header.i=@lunn.ch header.b=LSCcqLyL; arc=none smtp.client-ip=156.67.10.101 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=lunn.ch Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=lunn.ch Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=lunn.ch header.i=@lunn.ch header.b="LSCcqLyL" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lunn.ch; s=20171124; h=In-Reply-To:Content-Disposition:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:From:Sender:Reply-To:Subject: Date:Message-ID:To:Cc:MIME-Version:Content-Type:Content-Transfer-Encoding: Content-ID:Content-Description:Content-Disposition:In-Reply-To:References; bh=FXNp/q3EFc3VE1kfKaNpKliwa/x0VAgfl7uuP2pqXyQ=; b=LSCcqLyL687THwltEsK2assb/C 3b7ONr5S/NsGuqh95g8ETyeP8w5OHcpqHaLc0f2gSm96GX23H4LOiSdNTsy6ncwZBxO9IgDWduXRi lTK3xu1MszAdGGQ3vtJ9d79ef6EE0jwM9E5+NQvD9ImJeGApkoQnF+02/XeRajB/S1RA=; Received: from andrew by vps0.lunn.ch with local (Exim 4.94.2) (envelope-from ) id 1s49nd-00EoM8-2p; Tue, 07 May 2024 03:39:21 +0200 Date: Tue, 7 May 2024 03:39:21 +0200 From: Andrew Lunn To: Ricky Wu Cc: jesse.brandeburg@intel.co, anthony.l.nguyen@intel.com, intel-wired-lan@lists.osuosl.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, rickywu0421@gmail.com Subject: Re: [PATCH] e1000e: fix link fluctuations problem Message-ID: References: <20240502091215.13068-1-en-wei.wu@canonical.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240502091215.13068-1-en-wei.wu@canonical.com> On Thu, May 02, 2024 at 05:12:15PM +0800, Ricky Wu wrote: > As described in https://bugzilla.kernel.org/show_bug.cgi?id=218642, > some e1000e NIC reports link up -> link down -> link up when hog-plugging > the Ethernet cable. > > The problem is because the unstable behavior of Link Status bit in > PHY Status Register of some e1000e NIC. Why PHY is this? It might be the PHY manufacture has an errata, since this is probably not the MAC causing the problem, but the PHY itself. Andrew